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                                        解决Vuex持久化插件-在F5刷新页面后数据不见的问题 |
                                            
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    <article id="post-解决vux刷新消失问题" class="article article-type-post" itemscope itemprop="blogPost" data-scroll-reveal>

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      解决Vuex持久化插件-在F5刷新页面后数据不见的问题
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        <a href="/2019/08/07/解决vux刷新消失问题/" class="article-date">
  <time datetime="2019-08-07T09:31:46.808Z" itemprop="datePublished">2019-08-07</time>
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        <blockquote>
<p>vuex优势：相比sessionStorage，存储数据更安全，sessionStorage可以在控制台被看到。</p>
<p>vuex劣势：在F5刷新页面后，vuex会重新更新state，所以，存储的数据会丢失。</p>
<p>为了克服这个问题， vuex-persistedstate出现了~~</p>
</blockquote>
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<p><strong>使用方法：</strong> </p>
<h4 id="1-安装"><a href="#1-安装" class="headerlink" title="1.安装"></a>1.安装</h4><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">cnpm install vuex-persistedstate  --save-dev</span><br></pre></td></tr></table></figure>

<h4 id="2-在store下的index-js中-引入配置"><a href="#2-在store下的index-js中-引入配置" class="headerlink" title="2. 在store下的index.js中 引入配置"></a>2. 在store下的<code>index.js</code>中 引入配置</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> createPersistedState <span class="keyword">from</span> <span class="string">"vuex-persistedstate"</span></span><br><span class="line"><span class="keyword">const</span> store = <span class="keyword">new</span> Vuex.Store(&#123;</span><br><span class="line">  <span class="comment">// ...</span></span><br><span class="line">  plugins: [createPersistedState()]</span><br><span class="line">&#125;)</span><br></pre></td></tr></table></figure>

<h4 id="3-想要存储到sessionStorage，配置如下："><a href="#3-想要存储到sessionStorage，配置如下：" class="headerlink" title="3.想要存储到sessionStorage，配置如下："></a>3.想要存储到sessionStorage，配置如下：</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> createPersistedState <span class="keyword">from</span> <span class="string">"vuex-persistedstate"</span></span><br><span class="line"><span class="keyword">const</span> store = <span class="keyword">new</span> Vuex.Store(&#123;</span><br><span class="line">  <span class="comment">// ...</span></span><br><span class="line">  plugins: [createPersistedState(&#123;</span><br><span class="line">      storage: <span class="built_in">window</span>.sessionStorage</span><br><span class="line">  &#125;)]</span><br><span class="line">&#125;)</span><br></pre></td></tr></table></figure>

<blockquote>
<p> 想使用cookie或localStorage同理</p>
</blockquote>
<h4 id="4-vuex-persistedstate默认持久化所有state，指定需要持久化的state-配置如下："><a href="#4-vuex-persistedstate默认持久化所有state，指定需要持久化的state-配置如下：" class="headerlink" title="4.vuex-persistedstate默认持久化所有state，指定需要持久化的state,配置如下："></a>4.vuex-persistedstate默认持久化所有state，指定需要持久化的state,配置如下：</h4><blockquote>
<p>例如，你state中的user想要持久化，就写如下函数</p>
</blockquote>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> createPersistedState <span class="keyword">from</span> <span class="string">"vuex-persistedstate"</span></span><br><span class="line"><span class="keyword">const</span> store = <span class="keyword">new</span> Vuex.Store(&#123;</span><br><span class="line">  <span class="comment">// ...</span></span><br><span class="line">  plugins: [createPersistedState(&#123;</span><br><span class="line">      storage: <span class="built_in">window</span>.sessionStorage,</span><br><span class="line">      reducer(val) &#123;</span><br><span class="line">          <span class="keyword">return</span> &#123;</span><br><span class="line">          <span class="comment">// 只储存state中的user</span></span><br><span class="line">          user: val.user</span><br><span class="line">        &#125;</span><br><span class="line">     &#125;</span><br><span class="line">  &#125;)]</span><br></pre></td></tr></table></figure>

<p>参考链接：<a href="https://www.cnblogs.com/lemoncool/p/9645587.html" target="_blank" rel="noopener">https://www.cnblogs.com/lemoncool/p/9645587.html</a> </p>

      
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